نتایج جستجو برای: atlas based dosimetry

تعداد نتایج: 2959937  

2016

The estimation of the mean glandular dose to the breast (MGD) for x-ray based imaging modalities forms an essential part of quality control and is needed for risk estimation and for system design and optimisation. This review considers the development of methods for estimating the MGD for mammography, digital breast tomosynthesis (DBT) and dedicated breast CT (DBCT). Almost all of the methodolo...

Journal: :Artificial intelligence in medicine 1998
Serge Garlatti Mike Sharples

Trainers of radiologists face the particular challenges of teaching normal and abnormal appearance for a variety of imaging modalities, providing access to a large appropriately-indexed case library, and teaching a consistent approach to the reporting of cases. The computer has the potential to address these issues, to supplement conventional teaching of radiology by providing case-based tutori...

Journal: :IEEE Transactions on Radiation and Plasma Medical Sciences 2018

Journal: :Radiation 2022

Biological dosimetry is an internationally recognized method for quantifying and estimating radiation dose following suspected or verified excessive exposure to ionising radiation. In severe accidents where a large number of people are potentially affected, it possible distinguish irradiated from non-irradiated in order initiate appropriate medical care if necessary. addition incidents caused b...

قرائتی, حسین, اصفهانی, مهبد, اله‌وردی, محمود, سمیعی, فرهاد, شرفی, علی‌اکبر,

In vivo dosimetry seems an appropriate method for quality assurance in radiotherapy with CO-60, which can be considered as a routine program in radiotherapy centers. In this study, entrance and exit dose in tangential fields were measured in phantom for 30 breast cancer patients by using TLD in radiotherapy section of Imam Khomeini Hospital. TLD crystals were calibrated against SSDL (Secondary...

2014
Glen DeLoid Joel M. Cohen Tom Darrah Raymond Derk Liying Wang Georgios Pyrgiotakis Wendel Wohlleben Philip Demokritou

The need for accurate in vitro dosimetry remains a major obstacle to the development of cost-effective toxicological screening methods for engineered nanomaterials. An important key to accurate in vitro dosimetry is the characterization of sedimentation and diffusion rates of nanoparticles suspended in culture media, which largely depend upon the effective density and diameter of formed agglome...

2012
Urszula Sowa Tomasz Nowak Barbara Michalec Gabriela Mierzwińska Jan Swakoń Paweł Olko

The solid state active detectors, widely used for conventional radiotherapy, such as diamond detectors (DD) and diodes may be attractive tools also in dosimetry of therapeutic proton beams. Diodes are broadly applied in oncology clinics and routinely used for in-vivo dosimetry [1, 8]. These real-time detectors are rugged, relatively inexpensive and provide on-line readings, what allows for quic...

2005
Torsten Rohlfing Robert Brandt Randolf Menzel Daniel B. Russakoff

2010
Gaoyu Xiao B. Nicolas Bloch Jonathan Chappelow Elizabeth Genega Neil Rofsky Robert E. Lenkinski Anant Madabhushi

Different imaging modalities or protocols of a single patient may convey different types of information regarding a disease for the same anatomical organ/tissue. On the other hand, multi-modal/multi-protocol medical images from several different patients can also provide spatial statistics of the disease occurrence, which in turn can greatly aid in disease diagnosis and aid in improved, accurat...

2017
Bryan Muir Wesley Culberson Stephen Davis Gwe‐Ya Kim Yimei Huang Sung‐Woo Lee Jessica Lowenstein Arman Sarfehnia Jeffrey Siebers Naresh Tolani

PURPOSE To present the results and discuss potential insights gained through surveys on reference dosimetry practices. METHODS Two surveys were sent to medical physicists to learn about the current state of reference dosimetry practices at radiation oncology clinics worldwide. A short survey designed to maximize response rate was made publicly available and distributed via the AAPM website an...

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